Machine for seaming or double-seaming joints of sheet-metal roofing



(Model.)

0. W. BURRITT. MACHINE FOR SEAMING OR DOUBLE SEAMING JOINTS 0F SHEET METAL 300mm.

iinirnn grains Parana ()ltltlN \V. BURRITT, OF IVEEDSIORI", NEN YORK.

MACHINE FOR SEAMING OR DOUBLE-SEAMING JOINTS OF SHEET-METAL ROOFING.

SPECIFICATION forming part of Letters Patent No. 300,302, dated June 10, 1884.

' Application filed April 3, 1884. (Modem To all whom, it may concern.- trance of core-bar B, which drops onto gage Be it known that I, ORRIN \V. BURRITT, a L, that is provided with a stop-catch. Atcitizen oftheUnited Stat-es, residing at W'eeds tached to core-bar B is hinged lip F, with a port, in the county of Cayuga and State of standard for support to anti-friction roller N, New York, have invented a new and useful and governed by curved plate 0, (and spring 5 Improvement in a Machine for Beaming or 1,) attached to bar 0, and operated simultane- DoubleSeaming the Standing Joints of Sheetously with the movement of the handles that are Metal Roofing, of which the following is a attached to the shanks of bars B and C,which, specification. being combined with bar I), foot-plate E, and My invention relates to improvements in stop-lug Kof my former Patents Nos. 120,851 6 double seaming machines for standing lock and 266,604, will produce a complete double metal roofing; and the objects of my improvelock. ments are,first,combining the parts by peculiar To enable others to use my improved douarrangements for the purpose of turning either ble-seamer, I will describe it more in detail, the first or second edge on any desired thickness referring to the drawings and to the letters 6 of metal, by an automatic hinged lip working marked thereon. simultaneously with the movement of the hair The in'iprovemcnt consists in a cored bar for dle, governed by an anti-friction roller movthe admittance of loop-fastenings to an adjust. ing under a curved plate with aspring adjust able gage provided with a stop-button for an ment; second, a device in the construction of easy and quick adjustment, for the purpose of "'0 the bars for the use of a quick adj listing-gage, changing the height of the bars,adapting them andthepeculiar manner ofitsfastenings, thereto the turning of both the first and edgin by, with the combination, being able to form and to provide for this work a hinged lip is a complete lockbythe use of one machine. I attached to center bar, To this lip is a attain these objects by the mechanism shown standardgvith anti-friction roller N, working in the drawings. under a curved plate, 0, fastened to the shank Figure 1 is a perspective view of the comof opposite bar 0, and working simultaneously plete device. Fig. 2 is a section of the jaws, with the action of the handles, being drawn showing a hollow or cored. bar for the admitback to its place by the use of spring I. tance of loops to an adjustable gage, and stop- It will be readily seen that by the use of a 80 button attached. Fig. 3 represents the adself-adjusting lip to the center bar,as described, j ustable gage as it appears previous to its be the different thickness of metal can be turned ing placed into the sockets provided in the g ready for closing down with the treadle. It surface of the cored bar. Fig. 1 is a view of will also be observed that the movement of the the curved plate as worked upon the antihandles, operating upon the curved plate 0, 8 friction roller in connection with the spring acts upon roller N by a downward pressure, adjustment to hinged lip. drawing the edge beyond a right angle, pro- Similarletters refer to similar parts through ducing the same effect as caused by the use of out the several views that I present as an imthe foot-treadlc of my former Patent X0. provement upon my former Patents Nos. 266,604. This device not only saves one mo- 90 120,851 and 266,60i. tion, but the operator is relieved from raising In this improvement the parts are so comthe foot to do the work described. The gage is bined as to allow the completion of both the held in position on the cored bar while maksingie and double lock. ing the first turn of the metal. Closing down 5 The original letters on my former patents the edge with the opposite trcadle completes 9 are 13 G D E and F G H I .IK. I now use the asinglelock. Simply by turning thebutton on bar 13 by forming a core through it with slotthe end of the bar and drawing the gage, the ted bottom surface for the admission oftongues sea-mer will drop to the proper height for the or loops on the adjustable gage L, and secured second turning of the edge. The same operto place by stop-button M, fastened to the enation is gone through with as the first inove- 10o nient, turning the edge over again in the same I0 means for operating, substantially as and for the purpose set forth.

2. The means for adjustingtheheight of the sealnor, consisting of cored bar 13, with slotted bottom, adjustable gage L, with loops or tongues, and stop-button M, attached to cored bar B, and stop-catch on gage L, the combination arranged to operate substantially as herein shown and described, for the purposes set forth.

ORRIN V. BURRITT.

\Vitnesses:

WM. J. DONOVAN, DARWIN O. KNAPP. 

